contact breaker
circuit breaker cir"cuit break"er, n. (Elec.) A device contained within an electrical circuit designed to interrupt the circuit when the current exceeds a preset value; it is sometimes called a {contact breaker}. Its function is to prevent fire or damage to the circuit or the devices on the circuit which could be caused by excess current, such as that caused by a short-circuit. It differs from a {fuse} in not having a conducting element which melts (see 2nd {fuse}, n.). Circuit breakers are designed to be easily reset, i. e. to reclose the circuit after it has been opened by the circuit breaker; this is usually accomplished by simply moving a switch back and forth. They are commonly used in buildings to protect individual electrical lines, and are often contained in groups within a box called a circuit breaker panel, which divides the current from a main electrical line into multiple circuits each protected by a separate circuit breaker. Less commonly they may be found on individual devices. [PJC]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Contact breaker — Breaker arm with contact points at the left. The pivot is on the right and the cam follower is in the middle of the breaker arm. A contact breaker (or points ) is a type of electrical switch, and the term typically refers to the switching device… …   Wikipedia

  • contact breaker — contact breaker, a device for automatically breaking, or breaking and making, an electrical circuit …   Useful english dictionary

  • contact breaker — See breaker points …   Dictionary of automotive terms

  • contact breaker — mechanical switch in a distributor fitted with two metal contact points through which energy is transmitted …   English contemporary dictionary

  • contact-breaker — /ˈkɒntækt ˌbreɪkə/ (say kontakt .braykuh) noun any device for repeatedly making and breaking an electric circuit …   Australian English dictionary

  • contact breaker point — The individual contact of the breaker points …   Dictionary of automotive terms

  • contact breaker plate — The plate on which the breaker points are mounted. When adjusting the points, the plate and the points are moved apart in relation to each other …   Dictionary of automotive terms

  • contact breaker gap — The distance between the contact points at their furthest opening …   Dictionary of automotive terms

  • Breaker — or breakers may refer to:People*Breaker Morant, an Anglo Australian soldier cum folk hero named Harry Harbord Morant ** The Breaker , a 1973 novel about him by Kit Denton ** Breaker Morant (film) , film based on that novelPlaces*Breaker Island,… …   Wikipedia

  • breaker — [1] A person who dismantles a vehicle for parts. Also called a dismantler. [2] A cushioning layer between the belt layers and the tread in radial tires. [3] A device for removing contact. [4] Trucker slang for a CB er who asks to use a channel as …   Dictionary of automotive terms

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